Address
Nanzhai village, Liushi Town, yueqingCity, zhejiang Province, china
Tel
+86-13375775325
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Introduction:
This product is a 145kV, 120kN Long Rod Suspension Composite Insulator, a critical component engineered for high-voltage electrical insulation and mechanical support in modern power transmission systems. It is designed to provide exceptional reliability under severe environmental and electrical stresses. The insulator features a grey silicone rubber housing molded into a 34-shed profile with an advanced large-small (alternating) shed design. This configuration achieves a very substantial creepage distance of 4450mm, making it particularly suited for areas with heavy pollution. The insulator is equipped with forged steel end fittings: a Y-type (clevis) on one end and a ball-head on the other, facilitating secure and versatile connections to transmission towers and conductor hardware.
Drawings:
Specifications:
Product Type | Dimensions | Mechanical | Electrical | ||||||||
Height | Mini Dry | Mini | Diameter | Number of | Diameter | Specified | Routine | Rated Voltage | Lightning | Power | |
FXBW-145-120YQ | 1560±30 | 1375 | 4450 | 18 | 34 | 142/112 | 120 | 60 | 145 | 550 | 275 |
Order Information: | |||||||||||
Key Features:
Exceptional Pollution Performance: The core of its design is the 34-shed, large-small alternating profile. This pattern is highly effective in preventing the bridging of sheds by water or conductive pollution layers, thereby maximizing the utilization of the long creepage distance and significantly reducing the risk of flashover in wet and contaminated conditions.
High Mechanical Strength (120kN): Rated for a Specified Mechanical Load (SML) of 120 kiloNewtons (approximately 12.2 metric tons), this silicone tension insulator possesses robust mechanical integrity to withstand significant loads from heavy conductors, strong winds, and ice accumulation.
Superior Hydrophobicity: The housing is made from High-Temperature Vulcanized (HTV) Silicone Rubber. This material is inherently hydrophobic (water-repelling), a property it retains throughout its service life. Water beads up on the surface, which suppresses leakage currents and enhances performance in humid, foggy, or rainy conditions.
Very Long Creepage Distance (4450mm): The impressive creepage distance of 4450mm provides an extensive path along the surface to hinder the flow of leakage current. This is a defining characteristic for insulators deployed in Heavily Polluted environments, as defined by international standards.
Lightweight and Durable: Compared to traditional porcelain or glass insulator strings, this composite insulator is significantly lighter, reducing installation time and costs. The composite material is also highly resistant to impact damage from vandalism or flying debris, ensuring greater operational reliability.
Standardized End Fittings (Y-type & Ball Head): The combination of Y-type (clevis) and ball-head end fittings is a standard and reliable connection system, allowing for easy articulation and compatibility with existing hardware in suspension or dead-end applications.
Production Process and Workflow:
The manufacturing of this polymer tension insulator is a precision-controlled process ensuring high quality and consistency:
Core Rod Production: The process begins with the fabrication of the Fiberglass Reinforced Plastic (FRP) rod. This is achieved through pultrusion, a continuous process where glass fibers are impregnated with epoxy resin and pulled through a heated die. This results in a core with exceptional tensile strength and high dielectric strength.
Interface Treatment: The surface of the FRP rod is meticulously treated to ensure a perfect, permanent chemical and mechanical bond with the silicone rubber housing.
Injection Molding and Vulcanization: This is the most critical step. The FRP rod is placed into a mold that defines the 34-shed, large-small profile. HTV Silicone Rubber is injected under high temperature and pressure. The process vulcanizes (cures) the rubber, forming it into the shed profile and creating an inseparable, waterproof bond with the core rod.
End Fitting Assembly: The forged steel end fittings are attached to the ends of the FRP rod using a controlled compression crimping (or swaging) technique. This creates a strong mechanical lock. The critical interface is then sealed with a special adhesive to prevent any moisture ingress, which is vital for long-term performance.
Rigorous Quality Control and Testing: Each insulator undergoes a series of tests to verify its integrity:
Dimensional and Visual Inspection: Checking for any surface defects and verifying the creepage distance and overall dimensions.
Mechanical Routine Test (MRT): Each unit is subjected to a proof load (typically 50% of the SML for 10 seconds) to verify its short-term mechanical strength.
Electrical Tests: Including power frequency withstand voltage and lightning impulse withstand voltage tests to ensure the insulator meets the electrical requirements for 145kV systems.
Application Scenarios:
This 145kV 120kN Long Rod High Voltage Composite Insulator is specifically designed for demanding applications in high-voltage power networks:
145kV Overhead Transmission Lines: It is primarily used in suspension or tension applications to support and isolate conductors on transmission towers. Its high mechanical strength makes it suitable for use in areas with high wind or ice loads.
Heavily Polluted and Coastal Areas: Its defining feature, the 4450mm creepage distance, makes it an ideal choice for lines running through:
Coastal Regions: Where salt mist contamination is severe.
Industrial Zones: Exposed to chemical fumes, dust, and fly ash.
Arid and Desert Areas: Prone to cement dust or sandstorms that can settle on the insulator surface.
Substation Equipment: It is widely used as a post insulator for busbars, disconnect switches, and other apparatus within 145kV Air-Insulated Substations (AIS).
Critical and Hard-to-Access Lines: Its high reliability and low maintenance requirements make it cost-effective for critical transmission corridors and lines in remote or difficult terrain.
Two Ends Of Connecting Hardware List
| Attachedto the letter | WQ | WD | WU | CT | TT | UU | YQ | RR | |
| On behalfof fittings | Socket -Ball | Socket -Tongue | Socket- Clevis | Ball- Bal | Clevis-Tongue | Tongue-Tongue | Clevis- Clevis | Y-Ball | Ring-Ring |
| Connectionmark | 16-16 | 16-7 | 16-7 | 16-16 | 7-7 | 7-7 | 7-7 | 7-7 | 7-7 |
1. According to the requirements of hardware in models are indicated in the attached letter;
2. According to the requirements of users can formulate and match ends fitting;
3. Silicone rubber color gray as the default,can also choose the other colors.
4. Custom made according to customer's drawings
 |  |
 |  |
 |  |  |
Introduction:
This product is a 145kV, 120kN Long Rod Suspension Composite Insulator, a critical component engineered for high-voltage electrical insulation and mechanical support in modern power transmission systems. It is designed to provide exceptional reliability under severe environmental and electrical stresses. The insulator features a grey silicone rubber housing molded into a 34-shed profile with an advanced large-small (alternating) shed design. This configuration achieves a very substantial creepage distance of 4450mm, making it particularly suited for areas with heavy pollution. The insulator is equipped with forged steel end fittings: a Y-type (clevis) on one end and a ball-head on the other, facilitating secure and versatile connections to transmission towers and conductor hardware.
Drawings:
Specifications:
Product Type | Dimensions | Mechanical | Electrical | ||||||||
Height | Mini Dry | Mini | Diameter | Number of | Diameter | Specified | Routine | Rated Voltage | Lightning | Power | |
FXBW-145-120YQ | 1560±30 | 1375 | 4450 | 18 | 34 | 142/112 | 120 | 60 | 145 | 550 | 275 |
Order Information: | |||||||||||
Key Features:
Exceptional Pollution Performance: The core of its design is the 34-shed, large-small alternating profile. This pattern is highly effective in preventing the bridging of sheds by water or conductive pollution layers, thereby maximizing the utilization of the long creepage distance and significantly reducing the risk of flashover in wet and contaminated conditions.
High Mechanical Strength (120kN): Rated for a Specified Mechanical Load (SML) of 120 kiloNewtons (approximately 12.2 metric tons), this silicone tension insulator possesses robust mechanical integrity to withstand significant loads from heavy conductors, strong winds, and ice accumulation.
Superior Hydrophobicity: The housing is made from High-Temperature Vulcanized (HTV) Silicone Rubber. This material is inherently hydrophobic (water-repelling), a property it retains throughout its service life. Water beads up on the surface, which suppresses leakage currents and enhances performance in humid, foggy, or rainy conditions.
Very Long Creepage Distance (4450mm): The impressive creepage distance of 4450mm provides an extensive path along the surface to hinder the flow of leakage current. This is a defining characteristic for insulators deployed in Heavily Polluted environments, as defined by international standards.
Lightweight and Durable: Compared to traditional porcelain or glass insulator strings, this composite insulator is significantly lighter, reducing installation time and costs. The composite material is also highly resistant to impact damage from vandalism or flying debris, ensuring greater operational reliability.
Standardized End Fittings (Y-type & Ball Head): The combination of Y-type (clevis) and ball-head end fittings is a standard and reliable connection system, allowing for easy articulation and compatibility with existing hardware in suspension or dead-end applications.
Production Process and Workflow:
The manufacturing of this polymer tension insulator is a precision-controlled process ensuring high quality and consistency:
Core Rod Production: The process begins with the fabrication of the Fiberglass Reinforced Plastic (FRP) rod. This is achieved through pultrusion, a continuous process where glass fibers are impregnated with epoxy resin and pulled through a heated die. This results in a core with exceptional tensile strength and high dielectric strength.
Interface Treatment: The surface of the FRP rod is meticulously treated to ensure a perfect, permanent chemical and mechanical bond with the silicone rubber housing.
Injection Molding and Vulcanization: This is the most critical step. The FRP rod is placed into a mold that defines the 34-shed, large-small profile. HTV Silicone Rubber is injected under high temperature and pressure. The process vulcanizes (cures) the rubber, forming it into the shed profile and creating an inseparable, waterproof bond with the core rod.
End Fitting Assembly: The forged steel end fittings are attached to the ends of the FRP rod using a controlled compression crimping (or swaging) technique. This creates a strong mechanical lock. The critical interface is then sealed with a special adhesive to prevent any moisture ingress, which is vital for long-term performance.
Rigorous Quality Control and Testing: Each insulator undergoes a series of tests to verify its integrity:
Dimensional and Visual Inspection: Checking for any surface defects and verifying the creepage distance and overall dimensions.
Mechanical Routine Test (MRT): Each unit is subjected to a proof load (typically 50% of the SML for 10 seconds) to verify its short-term mechanical strength.
Electrical Tests: Including power frequency withstand voltage and lightning impulse withstand voltage tests to ensure the insulator meets the electrical requirements for 145kV systems.
Application Scenarios:
This 145kV 120kN Long Rod High Voltage Composite Insulator is specifically designed for demanding applications in high-voltage power networks:
145kV Overhead Transmission Lines: It is primarily used in suspension or tension applications to support and isolate conductors on transmission towers. Its high mechanical strength makes it suitable for use in areas with high wind or ice loads.
Heavily Polluted and Coastal Areas: Its defining feature, the 4450mm creepage distance, makes it an ideal choice for lines running through:
Coastal Regions: Where salt mist contamination is severe.
Industrial Zones: Exposed to chemical fumes, dust, and fly ash.
Arid and Desert Areas: Prone to cement dust or sandstorms that can settle on the insulator surface.
Substation Equipment: It is widely used as a post insulator for busbars, disconnect switches, and other apparatus within 145kV Air-Insulated Substations (AIS).
Critical and Hard-to-Access Lines: Its high reliability and low maintenance requirements make it cost-effective for critical transmission corridors and lines in remote or difficult terrain.
Two Ends Of Connecting Hardware List
| Attachedto the letter | WQ | WD | WU | CT | TT | UU | YQ | RR | |
| On behalfof fittings | Socket -Ball | Socket -Tongue | Socket- Clevis | Ball- Bal | Clevis-Tongue | Tongue-Tongue | Clevis- Clevis | Y-Ball | Ring-Ring |
| Connectionmark | 16-16 | 16-7 | 16-7 | 16-16 | 7-7 | 7-7 | 7-7 | 7-7 | 7-7 |
1. According to the requirements of hardware in models are indicated in the attached letter;
2. According to the requirements of users can formulate and match ends fitting;
3. Silicone rubber color gray as the default,can also choose the other colors.
4. Custom made according to customer's drawings
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